Beam or like structural member for use in reenforced concrete construction and other purposes



I R. H. ROGERS.v BEAM 0R LIKE STRUCTUHALIVIEMBER FOR U-SE IN HEENFORCED CONCRETE CONSTRUCTION AND OTHER PURPOSES.

l APPLICATION mw Nov. 11. lzo 1,433,232. C Y Patented 0%2? Brennan nawnnnoenns, orraniiriveron, Lennon, nnenann.

` "tenant on trnnlsafnncruitiin Maintenance in nnnnroncnn concentre y consrnncrion ann oriana rnnrosns.

y application inea noventa 17;. ieeoiseriai no. 424,647.

To alltuhmtmag/ concern." i n u Be itlknown that l, R101-IARD Hiiwirn Roenes, asubjectof the `lling of England,

'residingat Paddington, London, England,

haveinvented certain new and useful Improvementsvin Beams or like vStructural embersy for `Use in `Reenforced Concrete Construction" and Other Purposes, `of which the following is a specification.

"lhisinvention relates tobeams and other `structural unitso'l:l a `like kind, that is tosay "madeof metal `and intended to be Q so used 1x25" like structural unit as hereinbefore described `formed offtwo metal platesfarranged face opposed plate y y y other or to the i opposed plate;`

` that when loaded they are subjected to a p An unit according 1to1 this inventionlis intended primarily to take "the place of centeringfinfthe formation of bending moment.

reenforced concrete fico-rs and moreover to .i combine the functionsofcentering and rein-` forcement. This invention is, however,-not

confined. to the saidA object;` For example` the unit referred "tot` mayfbe employed in *the*` building of walls" or for doors or may lbeeinployed alone" ywhe'reverffai` beam is ordinarily employed..

The present invention provides abeamor to 'face and perforated to" provide tongues which said tongues are directed towards `the and are secured to one"anf Further, according` to invention, the

tongues `of one plateat least are solforrned from the material `of the plate as to leave therein one or more substantially continuous strips extendingwlengthwise of the funit and other :strips extending transversely" from `the first said lengthwisestrip or strips.

, `The, said transversely extending strips `may b'e arranged toconstitute ties between two fthe-said"lengthwise extending, strips that are adj acent to one anothen `companying drawings inlwhich` i one" construction, 1

f Conveniently, accordingtothisinvention, l 1` the said tonguesiare so formed that atleast one of the saidv lengthwise strips has along` both itsedges tongues attached thereto by their roots` whereby the said strip'k and "tongues form substantially a rib `of channel 'shape extending lengthwise of the unit. y

""l`liel,nature` of this "invention `isfnow` further `disclosed with reference to thefactigure l is a Vperspective*"viewshowing FigureQ is a perspectiveview of a detail butto a larger scale than that of Figure l, cfa modification.

Figure?) is a section on the line lll-HI of FigurefZ; Figure is a view similar to Figure 2 of la further modification and Figure 5 is perspective view showing a unit` inits final position for use. f

An unit is prepared formed of a sheet of metal A to constitute the under flange of the unit and of a second sheet B of the saine surface dimensions Vlto constitute the upper flange of theunit. Tongues C are formed in the material of the upper flange by means of cuts in pairs extending at right-angles to one `another in such a manner as to form, for each pair of cuts, four triangular shaped `tongueswhose tips all meet at the point of the' `lower A and the extreme tips C2 of the t0n1195,"where ythey rest upon the lower llange, areyspot-welded as indicated by C `or rivetedzto the lower flange A.. lf desired, the extreme tip ofeach tongue may be bent `asiseen at Cato lie parallel with the sheet A to afford better hold when welded.

` flt willbe observed that by the formation described, the material of the upper flange is left to afford what are virtually continuous ribs B1 of inverted ll shape extending lengthwise along theupper" flange. Further, that rectangular cells D are formed over the upper surface of theunder flange` An, and that the triangularshape of the tongues, together withthe V staggered arrangement of" neighbouring cells, causes communication to be afforded betweenall the cells.

Preferably the tongues on eitherside of 1the ribs B1 are` bentto lie at right-angles with the general" planes ofthe flanges, whereas thosegtongues whose roots are at right-angles to the former are slightly inclinedl to the said planes so as to give a virtually' smaller area. to the bottom `of each cell than is f provided at the top. rl'his `inodficationis illustratedin Figures 2 and 3 where the tongues at right-angles to the flanges are lettered E and those that are inclined are lettered F. 1

Lengths G of strip metal, rolled to channel section may be slipped into the inverted U-shaped ribs as shown to constitute additional reinforcements. Care is to be taken to keep the said lengths away from contact with the under flange, so that concrete may flow beneath them: care mustalso be taken not to interfere with communication between cell and cell. Also, perforations G1 are provided inthe strips which register with corresponding perforations G1 in the plate B1 so that air can escape therethrough when filling with concrete.

ln order to hold the reinforcementsv G clear of the plate A, small projections as shown at J in Figures l and 5 may be formed from the material of the tongues, being bent in such a way asr to afford the necessary support. In Figure l only two reinforcements G are shown for the sake of elearness in the drawing.

If desired the under plate or flange A may have small tongues formed in a bend to protrude from-its lower surface as at K in order to afford a key for plaster applied to the under surface of the plate. These tongues must be made small in order that the apertures left in their formation shall only permit very little concrete to eXude therethrough. Such as does eXude may be brushed olf before it isv too hard.

ln Figure 5 floor joists L are shown ready in position with a structural beam unit A B supported between themresting upon the lower flanges of the joists and spanning the gap between them. Each unit is dimensioned to have less than half the vertical depth of the linished floor and the several units are placedA in position as will readily be understood.

Concrete is then poured upon the units between thel joists or girders, the units serving` as centering and supporting the concrete. The latter flows into the cells and penetrates everywhere between the upper and lower plates. Struts may be provided, if needed, to support the units temporarily while the concrete is setting.

Whenthe concrete hasy set, it has become reinforced by the nieta-l of the unit which is thoroughly keyed to the concrete, and even if the underplate rusts off, the reinforcement is sufficient, since the upper plate is dimensioned' to ensure this, the prime function of the lower plate being to retain the concrete while it is wet.

For vertical work both plates may be formed with tongues and even for` floors this may bev done provided the tongueson the lower plate pass *up under the ribs B1 onthe upper. This will result in the material 0f the lovr Plate. A being left 1,111-

disturbed as forming a bottom to each cell whose walls are constituted by the tongues. The tongues on one plate may be rivetted Orotherwise secured to the tongues on the other instead of being attached direct to the plate itself as shown in the drawings. It is to be observed that between the lengtlr wise strips B1 transversely extending strips B2 are left which serve to tie adjacent strips B1 to one another. F urthcr, whereas it is preferable to form the tongues in the inanner hereinafter described since this removes no metal from the plate, the tongues may nevertheless be otherwise formed, for example in such a manner as to remove some of the material of the plate in the region surrounded by the tongues before the latter are bent down before the plane of the plate: the tongues may also be other than triangular in shape.

The unit may be used without concrete as a simple slab or beam ol lightweight and good stiffness.

It will be appreciated that in the construction described in detail above, no metal is cut away but all is utilised.

What I claim as my invention and desire to secure by Letters Patent iszl. A reinforcing unit for a recnlorced concrete structure comprising in combination two metal plates face to face and spaced apart from one another, one of which plates has in it a plurality of apertures, a metal tongue at each aperture integral at one end with the said plate and formed of material that originally occupied part at least of the said aperture, cach tongue projecting toward and directly attached at its other end to the opposed plate. and having at least one side spaced a 'ay from the apertured plate to provide access from out side the apertured plate through the said apertures past the said tongues to the interspace between the plates, substantially as described.

2. A reinforcing unit for a reenforccd concrete structure comprising in combination an upper metal plate and a lower substanti ally imperforate metal ulate arranged face to face and spaced apart one from the other, said upper platev having in it a plurality of apertures, a metal tongue at each aperture integral at one end with the said npper plate' and formed of material that originally occupied part at least of the said aperture, each tongue projecting toward and directly attached at its other end to the lower' plate and having its two sides spaced. away from the apertnrcd plates to provide access from outside the upper plate through the said apertures past the said tongues to the interspace between the plates. substantially as described.

3. A reinforcing unit for a reenforccd concrete structure, comprising, yin combinaineenee i tion, two metal plates arranged tace to tace and spaced apart one: from the other, one of which` plates has init a plurality of apert tures formed each by slits out in the metal,` the metal between the slits being bent down and' constituting tongues. `each integral at one "end with the apertured plate, said 1 tongues being attached each "at" its other end tothe opposed plate.

t. A reintoreing unit for ai reenforeed concrete structure," comprising in combination a metal plate `having a plurality of apertures through it,`groups offourtongues equalin area and triangular in sliapeprd jeeting from one surface of and integralv with .the said plate, each ot the groups o" `tour tongues constituted by niaterialthat `originally occupiedone of said apertures,

` `and a secondrnetal plate"` attached directly to the points `of the said tongues.

i A reinforcing unit for a resulto-reed concrete structure comprising in combina- `tion a Inetal plate having `aplurality of y fapertures through` it, said apertures being 25 t v i t arranged to intersect,` thexmetal between the vtermed each by slits cut Iin thenietal and slits y: being bent down yand constituting `1 `tongues each integralat one end with the t apertured platey and said apertures being `so located in rows extending longitudinally of the unit `as to provide continuous strips extending lengthwise of the unit, and other y Astrips extending transversely from the first and a 'secondvrnetal' plate attached directly tothe extremities ot the said tongues. 6; A reinforcing unitil for areentorced concrete j structure, comprising in combination a metal plate having a plurality of i formed each by slitscut in the metal and artending staggered in relation to one another, `and the extremities of thesaid tongues.

ture.

` RICHARD riawnn Roenes. y

`apertures through it, said apertures being t ln testimony whereof l atlix my signai 50 a second metal plateattaehed"directly-to t 

